In the world of cryptocurrencies, the term "Seed Phrase" is like the master key to your digital assets. If you lose this phrase or it is stolen, you could lose all your coins forever. Therefore, securely storing your Seed Phrase is of paramount importance.
This article will introduce you to 10 brands that produce dedicated Seed Phrase storage devices, each with its own unique features and designs, so you can choose according to your needs and budget.

Why use a dedicated Seed Phrase storage device?
Writing a Seed Phrase on paper may be the easiest method, but it carries high risks, such as the paper deteriorating, getting damaged, catching fire, or getting wet. These dedicated Seed Phrase storage devices are designed to solve these problems with materials that are resistant to various environmental conditions, such as fireproof metal, water resistance, or even impact resistance.
Let's see which brands you should know!
1. Trezor (Trezor Keep Metal)
Trezor Keep Metal is a robust Seed Phrase storage device made from AISI 304 aerospace-grade stainless steel. It is resistant to fire (up to 1450°C/2642°F), water, impact, and corrosion. It supports both 12 and 24-word BIP-39 Seed Phrases. Setup is done by permanently engraving the phrase onto metal plates with the provided tool, using a 4-character system to minimize errors. However, it is a one-time use device and errors cannot be easily corrected. It features tamper-evident seals for added security.
See more about Trezor Keep Metal 24 Words here.
2. OneKey (OneKey KeyTag)
OneKey KeyTag is a compact Seed Phrase storage device (14 grams) made from TC4 aerospace-grade titanium alloy, which is resistant to fire (melting point 1668°C/3034°F) and water. Recording the Seed Phrase is done by "dot punching" to encode words into numbers representing characters directly, adding a layer of security to hide information. It supports 24 recovery words and 2 additional passphrases.
See more about OneKey KeyTag here.
3. Ellipal (ELLIPAL Seed Phrase Steel)
ELLIPAL Seed Phrase Steel is a durable Seed Phrase storage device made from 316-grade stainless steel, which is resistant to fire (up to 1454°C/2649.2°F), water, acid, and insects. It supports both 12 and 24-word BIP-39 Seed Phrases, using only the first 4 characters of each word. Setup is easy with a sliding plate system that allows adding, deleting, or reusing characters, making error correction possible. The device is compact, portable, and can be locked for added security.
4. SecuX (X-SEED)
SecuX X-SEED is a Seed Phrase storage device that comes with stainless steel and aluminum plates. The stainless steel plates are fire-resistant up to 1454°C (2649°F) and waterproof, but the aluminum plates do not offer fire protection. It supports 12, 18, or 24-word Seed Phrases according to BIP32, BIP39, and BIP44 standards. It can store up to 8 sets of 12-word recovery phrases or 4 sets of 24-word phrases. Setup is done by using an engraving pen to write words on the plates. It includes tamper-evident stickers.
5. Safepal (SafePal Cypher)
SafePal Cypher is a Seed Phrase storage device made from stainless steel, highly resistant to fire up to 1398°C (2548°F), which is significantly higher than typical house fire temperatures. The manufacturer also warns against aluminum products due to their lower melting point. This device supports 12, 18, and 24-word BIP-39 Seed Phrases. Setup is done using a sliding plate system designed for convenient installation and storage. However, some users have noted that the characters and screws are very small, requiring patience during setup.
6. CryptoSteel (Cryptosteel Cassette Solo)
Cryptosteel Cassette Solo is a Seed Phrase storage device made from AISI 304 and 303 grade stainless steel. It is designed to be resistant to fire, water, corrosion, and impact. It supports BIP-39 Seed Phrases, typically using the first 4 characters of each word, and can also store 96 ASCII characters.
Setup is done by sliding pre-stamped metal character tiles into slots, which allows for reusability and easy error correction. However, independent tests have found that while it performs well in heat, the character tiles may dislodge from their slots under pressure or slight deformation, potentially leading to data loss.
7. Cryptotag (Cryptotag Zeus)
Cryptotag Zeus is a premium Seed Phrase storage device made from 6mm thick titanium. It is resistant to fire (tested at 399°C/750°F), water, impact, and is even "bulletproof". It supports BIP-39 and SLIP39 Seed Phrases. Recording is done by punching numbers that encode words onto the plates. It is a one-time use device and errors cannot be corrected.
8. Robins and Coleman (Crypto Seed Bank)
Robins and Coleman Crypto Seed Bank is a Seed Phrase storage kit made from 304-grade stainless steel, which is resistant to fire (melting point 1450°C/2642°F), water, rust, and corrosion. Setup is done using a tungsten-tipped engraving pen (included), with a built-in character template (A-Z) to ensure neat and accurate engraving. The device is as thin as a credit card and has screw holes for discreet placement.
9. COINSURE (COINSURE Crypto Seed Phrase Storage)
COINSURE Crypto Seed Phrase Storage is a Seed Phrase storage device made from stainless steel. It supports both 12 and 24-word Seed Phrases, making it versatile for various cryptocurrencies and wallets. Although specific test details for this brand are not provided, stainless steel generally offers resistance to fire and water.
10. LunchBlock (LunchBlock Bitcoin Seed Phrase Storage)
LunchBlock Bitcoin Seed Phrase Storage is a three-layer Seed Phrase storage device constructed with 304-grade stainless steel and aluminum. While it offers better protection than paper storage, the manufacturer explicitly states that
it cannot protect Seed Phrases from fire due to the properties of aluminum, and therefore recommends storing it in a fireproof location. It supports both 12 and 24-word Seed Phrases. Users write the phrase on the aluminum layer and then assemble the layers together.
Conclusion
Choosing the right Seed Phrase storage device is crucial for protecting your digital assets. Each of the brands mentioned above has its own strengths and methods of use. You should consider material durability, storage method, budget, and brand reliability to ensure your Seed Phrase is kept as secure as possible, no matter what happens.
Important Reminder: No matter which Seed Phrase storage device you choose, the most important thing is to keep it in a safe and secret place, accessible only to you!







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